Improvement in machines for cutting textile fabrics



A. WARTH. Machine for Cutting Textile Fabric.

No. 202,900. Patented April 23,1878.

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'August 2,1870, No. 151,456, dated May U ITED? PATENT OFFICE.

ALBIN wail armor sTAPLEToN, NEW YORK.

lMPROVEMENT IN MACHINES Fo CUTTING TEXTILE FABRICS.

Specification forming art... Letters Pam No. 202,900, dated April23,1878; application filed y g. l v v To all whom it mag concern;

Be it known that I, ALBIN WARTH, of Stapleton, in the county of Richmondand State of New York, have invented a new. and useful Improvement inMachines for. Cutting Textile and other Materials, which improvement isfully set forth in the following specification, reference being had tothe accompanying drawing, in which- Figure 1 represents a sectional sideelevation. Fig. 2 is a horizontal section in the plane as 00, Fig. 1.Fig. 3 is a face View of a portion of the knife-rod. Fig. 4 is atransverse section of the knife and knife-rod in a larger scale than thepreviouslymentioned figures, the plane of section being indicated by theline y 3 Fig. 1. Fig. 5 is afront view of the sleeve.

Similar letters indicate corresponding parts.

This invention relates to certain improvements on that class of machinesfor cutting textile and other materials which I have described in myPatents No. 106,101, dated 26, 1874, and particularlyin thePatentNo.165,636, dated July 13, 1875.

The particular parts to which my present improvements relate are themeans for producing a firm and durable connection between the knife andthe knife-rod also, the means of forming a durable connection betweenthe knife-rod and the sleeve, and between the sleeve and theconnecting-rod.

In the drawing, the letter A designates the knife-rod, which is fittedinto the standard B, and from which project two lugs, 11 a, which engagewith slots 1) b, Fig. 5, in the sleeve 0. This sleeve embraces thestandard B, and a reciprocating motion is imparted to it by an eccentricwrist-pin, a, secured to a disk, d,

which is firmly mounted on the shaft 0, said eccentric wrist-pin beingconnected by a slide, f, which engages with the sleeve 0 by means of afork, g. The sleeve is provided with two rims, h i, the upper rim Itbeing made to fit nicely between the two prongs or projections of thefork g, while the lower prong of the fork fits nicely between the tworims i of the sleeve.

In my former patents above named the sleeve is provided with a singlerim, which engages with the fork g, and I have found that February 20,1878.

inashort time these parts wear out, and the machine, when rapidlyoperated, makes a disagreeable noise. By providing the sleeve with tworims, this difficulty is obviated to a great extent, since I haveprovided four faces of contact instead of only two, and, unless all fourfaces wear off uniformly, the steady motion of the machine is notdisturbed. In the machine described in my Patent No. 165,636 theconnection between the sleeve and the knife rodwas effected by a singlelug, and on account of the very rapid motion of the knife-rod this lugwas liable to wear off and allow the sleeve to work loose. Thisdifficulty I have avoided by providing the knife-rod with two lugs, a a,as above described, and I find that I am enabled to work my machine fora long time without incurring the danger of having the sleeve workloose. The connection between the knife F and the knife-rod A iseffected as follows: The knife-rod is provided with two raised rims, jj, and the shank k of the knife fits between these rims, and is providedwith two shoulders, I l, which bear against the ends of said rims whenthe knife is new and not worn off. In the shank of the knife is a slot,m, with two enlargements, n 0, which are large enough to admit theenlarged part p of the screw q, while the main portion of the slot m isjust large enough to admit the flattened body of said screw. Theknife-rod is provided with apertures 3, (see Fig. 3,) which arecountersunk to admit the enlarged part 19 of the screw. If the screw (1is passed through the knife and through one of the enlargements n of theshank of the knife, said knife is firmly retained in position, and it isnot liable to slide in or out, and when the knife has worn out to themarks 1" it is broken off and resharpened, and then it is drawn out, sothat the screw q catches in the second enlargement o of the knife, whensaid knife is again firmly retained in position.

In the machine described in my Patent N 0. 165,636 the knife has a plainslot, and it is retained simply by the pressure exerted by theretaining-screw; but I have found that in this case the knife is liableto work loose, and to cause a disturbance in the operation of themachine, and, particularly after the knife has worn off, I have not beenable to readjust it again, so as to be able to work it with safety. Thisdifiiculty I have obviated by the enlargements n o in the slot of theknife, and by the countersink in the knife-rod,both said enlargementsand the countersink being adapted to engage with the enlarged part 11 ofthe screw.

I do not claim in this application anything shown and described in mypatents above named.

What I claim as new, and desire to secure by Letters Patent, is-- 1. Thecombination, with the knife F and the knife-rod A, of a screw, q, havingan enlarged part, p, a slot, m, in the knife, provided with one or moreenlargements, n 0, adapted to receive the enlarged part 11 of the screwq, and a hole in the knife-rod provided with a countersink, also adaptedto receive the enlarged part of said screw, all constructed and adaptedto operate substantially as shown and described.

2. The combination, with the knife-rod A, standard B, and sleeve 0, ofthe lugs a a, adapted to engage with corresponding slots in the sleeve,substantially as and for the purpose set forth.

3. The combination, with the knife-rod A, standard B, and sleeve 0, oftwo rims, h i, and a fork, g, substantially as and for the purposedescribed.

4. The knife F, having a slot, m, with one or more enlargements, n o,substantially as and for the purpose shown and described.

In testimony that I claim the foregoing I have hereunto set my hand andseal this 18th day of Fcbruary,1878.

ALBIN WARTII. [L. s.]

Witnesses:

W. HAUFF, E. F. KASTENHUBER.

